The Real Cost
Week of September 21, 2026 · Phoenix, AZ
2026 Toyota Sienna
18 gal tank · 35 MPG
$86–$101
typical fill → full tank · 18 galAt $5.60/gal, this tank gets you about 630 miles.
Source: EIA · Updated September 21, 2026
12-week state trend · padd proxy
+$0.77 over 12 wk
Local context
Phoenix runs at $5.60/gal this week — about 25.1% above the U.S. average of $4.48. At this price the 2026 Toyota Sienna's 35 MPG returns roughly 6.3 miles per dollar (28.6 gallons per 1,000 miles).
At a typical 12,000 miles a year — the U.S. driving average — a Phoenix driver spends about $1,920 on gas in this car (use the calculator for your own mileage). For the same car, $2,058 in California (priciest reporting state at $6.00/gal) vs. $1,347 in Texas ($3.93/gal). $711 swing.
By the numbers
Fill cost
$86–$101
typical → full · 630 mi/tank
Per gallon
$5.60
EIA West Coast weekly
Monthly · 12k mi/yr
$160.00
28.6 gal
Annual · 12k mi/yr
$1920
343 gal
The math
Why it costs what it costs.
- Fill cost = 18 gal × $5.60/gal = $100.80
- Miles per tank = 18 × 35 = 630
- Annual @ 12,000 mi (typical) = 12,000 ÷ 35 × $5.60 = $1920
Want to customize miles per year or override the pump price you saw? Use the full calculator.